23639906 has 16 divisors (see below), whose sum is σ = 37105344. Its totient is φ = 11274384.

The previous prime is 23639897. The next prime is 23639923. The reversal of 23639906 is 60993632.

It is a self number, because there is not a number n which added to its sum of digits gives 23639906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29645 + ... + 30431.

It is an arithmetic number, because the mean of its divisors is an integer number (2319084).

Almost surely, 2^23639906 is an apocalyptic number.

23639906 is a deficient number, since it is larger than the sum of its proper divisors (13465438).

23639906 is a wasteful number, since it uses less digits than its factorization.

23639906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465.

The product of its (nonzero) digits is 52488, while the sum is 38.

The square root of 23639906 is about 4862.0886458394. The cubic root of 23639906 is about 287.0000121405. Note that the first 4 decimals are identical.

The spelling of 23639906 in words is "twenty-three million, six hundred thirty-nine thousand, nine hundred six".